Without delay, let's solve this. We've got 581 and we will be multiplying it by 421, that is, adding 581 to itself 421 times.
Step 1: 0 + 581 = 581
Step 2: 581 + 581 = 1162
Step 3: 1162 + 581 = 1743
Step 4: 1743 + 581 = 2324
Step 5: 2324 + 581 = 2905
Step 6: 2905 + 581 = 3486
Step 7: 3486 + 581 = 4067
Step 8: 4067 + 581 = 4648
Step 9: 4648 + 581 = 5229
Step 10: 5229 + 581 = 5810
Step 11: 5810 + 581 = 6391
Step 12: 6391 + 581 = 6972
Step 13: 6972 + 581 = 7553
Step 14: 7553 + 581 = 8134
Step 15: 8134 + 581 = 8715
Step 16: 8715 + 581 = 9296
Step 17: 9296 + 581 = 9877
Step 18: 9877 + 581 = 10458
Step 19: 10458 + 581 = 11039
Step 20: 11039 + 581 = 11620
Step 21: 11620 + 581 = 12201
Step 22: 12201 + 581 = 12782
Step 23: 12782 + 581 = 13363
Step 24: 13363 + 581 = 13944
Step 25: 13944 + 581 = 14525
Step 26: 14525 + 581 = 15106
Step 27: 15106 + 581 = 15687
Step 28: 15687 + 581 = 16268
Step 29: 16268 + 581 = 16849
Step 30: 16849 + 581 = 17430
Step 31: 17430 + 581 = 18011
Step 32: 18011 + 581 = 18592
Step 33: 18592 + 581 = 19173
Step 34: 19173 + 581 = 19754
Step 35: 19754 + 581 = 20335
Step 36: 20335 + 581 = 20916
Step 37: 20916 + 581 = 21497
Step 38: 21497 + 581 = 22078
Step 39: 22078 + 581 = 22659
Step 40: 22659 + 581 = 23240
Step 41: 23240 + 581 = 23821
Step 42: 23821 + 581 = 24402
Step 43: 24402 + 581 = 24983
Step 44: 24983 + 581 = 25564
Step 45: 25564 + 581 = 26145
Step 46: 26145 + 581 = 26726
Step 47: 26726 + 581 = 27307
Step 48: 27307 + 581 = 27888
Step 49: 27888 + 581 = 28469
Step 50: 28469 + 581 = 29050
Step 51: 29050 + 581 = 29631
Step 52: 29631 + 581 = 30212
Step 53: 30212 + 581 = 30793
Step 54: 30793 + 581 = 31374
Step 55: 31374 + 581 = 31955
Step 56: 31955 + 581 = 32536
Step 57: 32536 + 581 = 33117
Step 58: 33117 + 581 = 33698
Step 59: 33698 + 581 = 34279
Step 60: 34279 + 581 = 34860
Step 61: 34860 + 581 = 35441
Step 62: 35441 + 581 = 36022
Step 63: 36022 + 581 = 36603
Step 64: 36603 + 581 = 37184
Step 65: 37184 + 581 = 37765
Step 66: 37765 + 581 = 38346
Step 67: 38346 + 581 = 38927
Step 68: 38927 + 581 = 39508
Step 69: 39508 + 581 = 40089
Step 70: 40089 + 581 = 40670
Step 71: 40670 + 581 = 41251
Step 72: 41251 + 581 = 41832
Step 73: 41832 + 581 = 42413
Step 74: 42413 + 581 = 42994
Step 75: 42994 + 581 = 43575
Step 76: 43575 + 581 = 44156
Step 77: 44156 + 581 = 44737
Step 78: 44737 + 581 = 45318
Step 79: 45318 + 581 = 45899
Step 80: 45899 + 581 = 46480
Step 81: 46480 + 581 = 47061
Step 82: 47061 + 581 = 47642
Step 83: 47642 + 581 = 48223
Step 84: 48223 + 581 = 48804
Step 85: 48804 + 581 = 49385
Step 86: 49385 + 581 = 49966
Step 87: 49966 + 581 = 50547
Step 88: 50547 + 581 = 51128
Step 89: 51128 + 581 = 51709
Step 90: 51709 + 581 = 52290
Step 91: 52290 + 581 = 52871
Step 92: 52871 + 581 = 53452
Step 93: 53452 + 581 = 54033
Step 94: 54033 + 581 = 54614
Step 95: 54614 + 581 = 55195
Step 96: 55195 + 581 = 55776
Step 97: 55776 + 581 = 56357
Step 98: 56357 + 581 = 56938
Step 99: 56938 + 581 = 57519
Step 100: 57519 + 581 = 58100
Step 101: 58100 + 581 = 58681
Step 102: 58681 + 581 = 59262
Step 103: 59262 + 581 = 59843
Step 104: 59843 + 581 = 60424
Step 105: 60424 + 581 = 61005
Step 106: 61005 + 581 = 61586
Step 107: 61586 + 581 = 62167
Step 108: 62167 + 581 = 62748
Step 109: 62748 + 581 = 63329
Step 110: 63329 + 581 = 63910
Step 111: 63910 + 581 = 64491
Step 112: 64491 + 581 = 65072
Step 113: 65072 + 581 = 65653
Step 114: 65653 + 581 = 66234
Step 115: 66234 + 581 = 66815
Step 116: 66815 + 581 = 67396
Step 117: 67396 + 581 = 67977
Step 118: 67977 + 581 = 68558
Step 119: 68558 + 581 = 69139
Step 120: 69139 + 581 = 69720
Step 121: 69720 + 581 = 70301
Step 122: 70301 + 581 = 70882
Step 123: 70882 + 581 = 71463
Step 124: 71463 + 581 = 72044
Step 125: 72044 + 581 = 72625
Step 126: 72625 + 581 = 73206
Step 127: 73206 + 581 = 73787
Step 128: 73787 + 581 = 74368
Step 129: 74368 + 581 = 74949
Step 130: 74949 + 581 = 75530
Step 131: 75530 + 581 = 76111
Step 132: 76111 + 581 = 76692
Step 133: 76692 + 581 = 77273
Step 134: 77273 + 581 = 77854
Step 135: 77854 + 581 = 78435
Step 136: 78435 + 581 = 79016
Step 137: 79016 + 581 = 79597
Step 138: 79597 + 581 = 80178
Step 139: 80178 + 581 = 80759
Step 140: 80759 + 581 = 81340
Step 141: 81340 + 581 = 81921
Step 142: 81921 + 581 = 82502
Step 143: 82502 + 581 = 83083
Step 144: 83083 + 581 = 83664
Step 145: 83664 + 581 = 84245
Step 146: 84245 + 581 = 84826
Step 147: 84826 + 581 = 85407
Step 148: 85407 + 581 = 85988
Step 149: 85988 + 581 = 86569
Step 150: 86569 + 581 = 87150
Step 151: 87150 + 581 = 87731
Step 152: 87731 + 581 = 88312
Step 153: 88312 + 581 = 88893
Step 154: 88893 + 581 = 89474
Step 155: 89474 + 581 = 90055
Step 156: 90055 + 581 = 90636
Step 157: 90636 + 581 = 91217
Step 158: 91217 + 581 = 91798
Step 159: 91798 + 581 = 92379
Step 160: 92379 + 581 = 92960
Step 161: 92960 + 581 = 93541
Step 162: 93541 + 581 = 94122
Step 163: 94122 + 581 = 94703
Step 164: 94703 + 581 = 95284
Step 165: 95284 + 581 = 95865
Step 166: 95865 + 581 = 96446
Step 167: 96446 + 581 = 97027
Step 168: 97027 + 581 = 97608
Step 169: 97608 + 581 = 98189
Step 170: 98189 + 581 = 98770
Step 171: 98770 + 581 = 99351
Step 172: 99351 + 581 = 99932
Step 173: 99932 + 581 = 100513
Step 174: 100513 + 581 = 101094
Step 175: 101094 + 581 = 101675
Step 176: 101675 + 581 = 102256
Step 177: 102256 + 581 = 102837
Step 178: 102837 + 581 = 103418
Step 179: 103418 + 581 = 103999
Step 180: 103999 + 581 = 104580
Step 181: 104580 + 581 = 105161
Step 182: 105161 + 581 = 105742
Step 183: 105742 + 581 = 106323
Step 184: 106323 + 581 = 106904
Step 185: 106904 + 581 = 107485
Step 186: 107485 + 581 = 108066
Step 187: 108066 + 581 = 108647
Step 188: 108647 + 581 = 109228
Step 189: 109228 + 581 = 109809
Step 190: 109809 + 581 = 110390
Step 191: 110390 + 581 = 110971
Step 192: 110971 + 581 = 111552
Step 193: 111552 + 581 = 112133
Step 194: 112133 + 581 = 112714
Step 195: 112714 + 581 = 113295
Step 196: 113295 + 581 = 113876
Step 197: 113876 + 581 = 114457
Step 198: 114457 + 581 = 115038
Step 199: 115038 + 581 = 115619
Step 200: 115619 + 581 = 116200
Step 201: 116200 + 581 = 116781
Step 202: 116781 + 581 = 117362
Step 203: 117362 + 581 = 117943
Step 204: 117943 + 581 = 118524
Step 205: 118524 + 581 = 119105
Step 206: 119105 + 581 = 119686
Step 207: 119686 + 581 = 120267
Step 208: 120267 + 581 = 120848
Step 209: 120848 + 581 = 121429
Step 210: 121429 + 581 = 122010
Step 211: 122010 + 581 = 122591
Step 212: 122591 + 581 = 123172
Step 213: 123172 + 581 = 123753
Step 214: 123753 + 581 = 124334
Step 215: 124334 + 581 = 124915
Step 216: 124915 + 581 = 125496
Step 217: 125496 + 581 = 126077
Step 218: 126077 + 581 = 126658
Step 219: 126658 + 581 = 127239
Step 220: 127239 + 581 = 127820
Step 221: 127820 + 581 = 128401
Step 222: 128401 + 581 = 128982
Step 223: 128982 + 581 = 129563
Step 224: 129563 + 581 = 130144
Step 225: 130144 + 581 = 130725
Step 226: 130725 + 581 = 131306
Step 227: 131306 + 581 = 131887
Step 228: 131887 + 581 = 132468
Step 229: 132468 + 581 = 133049
Step 230: 133049 + 581 = 133630
Step 231: 133630 + 581 = 134211
Step 232: 134211 + 581 = 134792
Step 233: 134792 + 581 = 135373
Step 234: 135373 + 581 = 135954
Step 235: 135954 + 581 = 136535
Step 236: 136535 + 581 = 137116
Step 237: 137116 + 581 = 137697
Step 238: 137697 + 581 = 138278
Step 239: 138278 + 581 = 138859
Step 240: 138859 + 581 = 139440
Step 241: 139440 + 581 = 140021
Step 242: 140021 + 581 = 140602
Step 243: 140602 + 581 = 141183
Step 244: 141183 + 581 = 141764
Step 245: 141764 + 581 = 142345
Step 246: 142345 + 581 = 142926
Step 247: 142926 + 581 = 143507
Step 248: 143507 + 581 = 144088
Step 249: 144088 + 581 = 144669
Step 250: 144669 + 581 = 145250
Step 251: 145250 + 581 = 145831
Step 252: 145831 + 581 = 146412
Step 253: 146412 + 581 = 146993
Step 254: 146993 + 581 = 147574
Step 255: 147574 + 581 = 148155
Step 256: 148155 + 581 = 148736
Step 257: 148736 + 581 = 149317
Step 258: 149317 + 581 = 149898
Step 259: 149898 + 581 = 150479
Step 260: 150479 + 581 = 151060
Step 261: 151060 + 581 = 151641
Step 262: 151641 + 581 = 152222
Step 263: 152222 + 581 = 152803
Step 264: 152803 + 581 = 153384
Step 265: 153384 + 581 = 153965
Step 266: 153965 + 581 = 154546
Step 267: 154546 + 581 = 155127
Step 268: 155127 + 581 = 155708
Step 269: 155708 + 581 = 156289
Step 270: 156289 + 581 = 156870
Step 271: 156870 + 581 = 157451
Step 272: 157451 + 581 = 158032
Step 273: 158032 + 581 = 158613
Step 274: 158613 + 581 = 159194
Step 275: 159194 + 581 = 159775
Step 276: 159775 + 581 = 160356
Step 277: 160356 + 581 = 160937
Step 278: 160937 + 581 = 161518
Step 279: 161518 + 581 = 162099
Step 280: 162099 + 581 = 162680
Step 281: 162680 + 581 = 163261
Step 282: 163261 + 581 = 163842
Step 283: 163842 + 581 = 164423
Step 284: 164423 + 581 = 165004
Step 285: 165004 + 581 = 165585
Step 286: 165585 + 581 = 166166
Step 287: 166166 + 581 = 166747
Step 288: 166747 + 581 = 167328
Step 289: 167328 + 581 = 167909
Step 290: 167909 + 581 = 168490
Step 291: 168490 + 581 = 169071
Step 292: 169071 + 581 = 169652
Step 293: 169652 + 581 = 170233
Step 294: 170233 + 581 = 170814
Step 295: 170814 + 581 = 171395
Step 296: 171395 + 581 = 171976
Step 297: 171976 + 581 = 172557
Step 298: 172557 + 581 = 173138
Step 299: 173138 + 581 = 173719
Step 300: 173719 + 581 = 174300
Step 301: 174300 + 581 = 174881
Step 302: 174881 + 581 = 175462
Step 303: 175462 + 581 = 176043
Step 304: 176043 + 581 = 176624
Step 305: 176624 + 581 = 177205
Step 306: 177205 + 581 = 177786
Step 307: 177786 + 581 = 178367
Step 308: 178367 + 581 = 178948
Step 309: 178948 + 581 = 179529
Step 310: 179529 + 581 = 180110
Step 311: 180110 + 581 = 180691
Step 312: 180691 + 581 = 181272
Step 313: 181272 + 581 = 181853
Step 314: 181853 + 581 = 182434
Step 315: 182434 + 581 = 183015
Step 316: 183015 + 581 = 183596
Step 317: 183596 + 581 = 184177
Step 318: 184177 + 581 = 184758
Step 319: 184758 + 581 = 185339
Step 320: 185339 + 581 = 185920
Step 321: 185920 + 581 = 186501
Step 322: 186501 + 581 = 187082
Step 323: 187082 + 581 = 187663
Step 324: 187663 + 581 = 188244
Step 325: 188244 + 581 = 188825
Step 326: 188825 + 581 = 189406
Step 327: 189406 + 581 = 189987
Step 328: 189987 + 581 = 190568
Step 329: 190568 + 581 = 191149
Step 330: 191149 + 581 = 191730
Step 331: 191730 + 581 = 192311
Step 332: 192311 + 581 = 192892
Step 333: 192892 + 581 = 193473
Step 334: 193473 + 581 = 194054
Step 335: 194054 + 581 = 194635
Step 336: 194635 + 581 = 195216
Step 337: 195216 + 581 = 195797
Step 338: 195797 + 581 = 196378
Step 339: 196378 + 581 = 196959
Step 340: 196959 + 581 = 197540
Step 341: 197540 + 581 = 198121
Step 342: 198121 + 581 = 198702
Step 343: 198702 + 581 = 199283
Step 344: 199283 + 581 = 199864
Step 345: 199864 + 581 = 200445
Step 346: 200445 + 581 = 201026
Step 347: 201026 + 581 = 201607
Step 348: 201607 + 581 = 202188
Step 349: 202188 + 581 = 202769
Step 350: 202769 + 581 = 203350
Step 351: 203350 + 581 = 203931
Step 352: 203931 + 581 = 204512
Step 353: 204512 + 581 = 205093
Step 354: 205093 + 581 = 205674
Step 355: 205674 + 581 = 206255
Step 356: 206255 + 581 = 206836
Step 357: 206836 + 581 = 207417
Step 358: 207417 + 581 = 207998
Step 359: 207998 + 581 = 208579
Step 360: 208579 + 581 = 209160
Step 361: 209160 + 581 = 209741
Step 362: 209741 + 581 = 210322
Step 363: 210322 + 581 = 210903
Step 364: 210903 + 581 = 211484
Step 365: 211484 + 581 = 212065
Step 366: 212065 + 581 = 212646
Step 367: 212646 + 581 = 213227
Step 368: 213227 + 581 = 213808
Step 369: 213808 + 581 = 214389
Step 370: 214389 + 581 = 214970
Step 371: 214970 + 581 = 215551
Step 372: 215551 + 581 = 216132
Step 373: 216132 + 581 = 216713
Step 374: 216713 + 581 = 217294
Step 375: 217294 + 581 = 217875
Step 376: 217875 + 581 = 218456
Step 377: 218456 + 581 = 219037
Step 378: 219037 + 581 = 219618
Step 379: 219618 + 581 = 220199
Step 380: 220199 + 581 = 220780
Step 381: 220780 + 581 = 221361
Step 382: 221361 + 581 = 221942
Step 383: 221942 + 581 = 222523
Step 384: 222523 + 581 = 223104
Step 385: 223104 + 581 = 223685
Step 386: 223685 + 581 = 224266
Step 387: 224266 + 581 = 224847
Step 388: 224847 + 581 = 225428
Step 389: 225428 + 581 = 226009
Step 390: 226009 + 581 = 226590
Step 391: 226590 + 581 = 227171
Step 392: 227171 + 581 = 227752
Step 393: 227752 + 581 = 228333
Step 394: 228333 + 581 = 228914
Step 395: 228914 + 581 = 229495
Step 396: 229495 + 581 = 230076
Step 397: 230076 + 581 = 230657
Step 398: 230657 + 581 = 231238
Step 399: 231238 + 581 = 231819
Step 400: 231819 + 581 = 232400
Step 401: 232400 + 581 = 232981
Step 402: 232981 + 581 = 233562
Step 403: 233562 + 581 = 234143
Step 404: 234143 + 581 = 234724
Step 405: 234724 + 581 = 235305
Step 406: 235305 + 581 = 235886
Step 407: 235886 + 581 = 236467
Step 408: 236467 + 581 = 237048
Step 409: 237048 + 581 = 237629
Step 410: 237629 + 581 = 238210
Step 411: 238210 + 581 = 238791
Step 412: 238791 + 581 = 239372
Step 413: 239372 + 581 = 239953
Step 414: 239953 + 581 = 240534
Step 415: 240534 + 581 = 241115
Step 416: 241115 + 581 = 241696
Step 417: 241696 + 581 = 242277
Step 418: 242277 + 581 = 242858
Step 419: 242858 + 581 = 243439
Step 420: 243439 + 581 = 244020
Step 421: 244020 + 581 = 244601

So, 581*421 = 244601